op btjshnell



J. H. COONS.

LOCK.

APPLICATION FILED OCT. 29.1915- Patented Aug.

JAMES HARVEY COONS, OF BUSHNELL, ILLINOIS, ASSIGNOR. 0F ON E-HALF TO HARRY J. DRAKE. OF BUSHNELL, ILLINOIS.

LOCK.

To all whom it may concern:

Be it known. that I, JAMES H. CooNs, a citizen of the United States, and a resident of Bushnell, in the county of McDonough and State of Illinois, have invented a new and useful Lock, of which the following is a sp iiication.

lily invention relates primarily to looks of that character which are applied to pivoted, tilting doors, but as the nature of the invention is further disclosed it will be evident that it may be employed on doors of other character.

It consists, substantially in the improvements hereinafter described.

One object of my invention consists in the provision of an inter-engaging lock for securing doors in closed position, the lock being releasable by a lever arm which is arranged in such manner that it may be sealed to hold the lock closed and thereby prevent unauthorized opening of the door.

Another object of the invention consists in so arranging the lock that the first movement of the lever to break the lock will break the seal and further movement unlock the door, a separate lever arm or hand crank being employed in opening the door. I

A further object is to generally improve the construction and increase the utility, efficiency and security of locks of this nature.

I attain these objects by the means illus trated in the accompanying drawings, in which like parts are similarly designated,the said means being identical with those shown and described in my application for patent, Serial No. 20,822, filed April 12, 1915, for car doors, of which. the present application is a division.

In the drawings: Figure 1 is a front elevation of the lock mechanism, the face plate of the lock casing having been removed and the lock shown in active position. Fig. 2 is a similar view, showing the lock released; and Fig. 3, a perspective view of the structure shown in Fig. 1.

In each of the views parts of a railroad box car are shown.

Considering the drawings in detail, 40 indicates the side of the car, 40 a face plate on which the lock mechanism is secured, 40 the door opening, and 41, 42, tilting doors or door sections pivoted at their lower, outer Specification of Letters Patent.

Patented Aug. 1, 1916.

Divided and this application filed October 29,

corners. The lower edge of the door 41, preferably adjacent its inner corner, carries a bracket 44 having an outwardly extending locking tongue 48 which coacts with the lock proper which will now be described.

The lock mechanism includesa'n E-shaped plate 49 provided intermediate its length with a. lateral extension 50 to receive a pivot pin 51 and at its upper end with an elongated lateral extension 52 adapted to project over the tongue 48 of the door-carried bracket 44 in the active position of the lock to prevent swinging movement of the door 41. The locking plate 49 is also provided at its lower end with a laterally and upwardly directed extension 53 to which is pivotally secured the lower end of a trip plate 54 the upper end of which is bifurcated to provide spaced fingers 55 to straddle the tongue or locking finger 48 when the door is closed and locked, this locking plate being held against swinging movement in one direction by an overlapping guide or stop 56. As shown, the intermediate portion of the trip plate is cut away at 57 to provide a stop shoulder which rests against a pin 58 when the door is locked, the movement of. the trip plate being vertically upward during unlocking of the door and downward during locking of the door andthe arms or fingers of the trip plate and the locking finger 52 of the locking plate being adapted to completely surround the locking tongue or finger 48 of the door-carried bracket when the door is locked.

Pivoted on a shaft 34 (fully described in my copending application hereinabove referred to) is a lock operating lever arm 59. The inner end of this lever arm is pivotally connected to one end of a slotted link 61 and a pivot pin 62, carried by the extension 53 of the locking plate 49, projects through the slot in said link, a washer being applied to prevent displacement of the link from the pin 62. The upper end of the link 61 is provided with a cam-face 64, which at all times engages against a pin 65 and serves as a guide for the movement of the link 61 upon swinging of the lever 59. As will best be seen by referring to Fig. 1, this cam-face is so formed that during upward movement of the link 61 throughout the length of its slot, it will constantly engage against the pin 65 and act to prevent swinging of the locking plate 49 in such manner as to in any way free the lock. As soon, however, as the link reaches a position in alinement with the lever arm 59, the cam-face moves out of engagement with the pin 65 and further swinging of the lever 59 will first draw the link to bring the pin 62 into the opposite end of the slot in said link and will then act 7 through the link to swingthe locking plate out of engagement with the locking finger or tongue dSand also to later, after the door has been raised, move the trip or latch plate 54 upwardly when the parts will occupy the 7 positions shown in Fig. 2.

The lever arm is provided adjacent its pivot point with a laterally directed extention 66 which carries a weight 67 which serves to cause continued swinging of the lever arm 59 after the door is opened to raise the trip plate 54- in the manner above described and to hold said trip plate in raised position and the locking plate in released position until closing of the doors. That end of the lever arm 59 to which thelink G1. isattached is provided with a downward extension having an opening 68. A bracket 69 is carried bythe faceplate 40 and provided with an opening 70 which, in active position of the lock, is near the opening 68.

Itwill therefore be clear that when the door 41 is closed and locked, a wire 77 may be passed through the openings 68' and 70 and secured by a leaden seal 72 which will prevent unlocking the door without subsequent discovery The lock-operating hand lever 59 and'other'parts of the lock mechanism should, however, be strong enough, to permit breaking this seal by the mere swinging of- Copies of this patent may'be obtained for elements, a link for moving said pin but are not directly connected with the lock, are shown and described in my aforesaid copending application, and require no description herein.

Having thus described my invention I claim as new the following, to-wit:

1. A trip-plate having a bifurcated upper end, an E-shaped locking plate pivoted at its midlength and one of its arms providing a locking extension adapted to cross said end, a link having a slot, a pin mounted in the other arm of said locking plate and engaging said slot, said trip plate also pivoted to said pin, and means for moving all of said elements simultaneously.

2. A trip-plate having a bifurcated upper end, a plate having a locking extension adapted to cross it, a pin connecting said and thereby said elements simultaneously, and. means for moving the link.

3. A trip-plate having a bifurcated end, av plate having a locking extension adapted to cross it, a pin pivotally connecting said elements, a link having a slot in which said pin seats, and a lever for moving said pin.

4. The combination with a car-seal engageable element, of a trip-plate having a bifurcated end, a plate having a locking cxtension adapted to cross it, a pin pivotally connecting said elements, a link having a slot in which said pin seats, and a lever for moving said pin, said lever having an extension adapted for association with said carseal engageable element.

5. A trip-plate having a bifurcated end, a plate having a locking extension adapted to cross it, a pin pivotally connecting said elements, a link having a slot in which said pin seats, a lever for moving said pin, and

a weight on said lever.

In testimony that I claim the foregoing l hereto subscribe my name.

JAMES HARVEY COONS.

five cents each. by addressing the Commissioner of Patents. Washington, D. G. 

